<template>
  <div class="panel-tab__content">
    <a-form :model="formFieldForm" :label-col="{ span: 6 }" :wrapper-col="{ span: 18 }" size="small">
      <a-form-item label="表单标识">
        <a-input v-model:value="formKey" allow-clear @change="updateElementFormKey" />
      </a-form-item>
      <a-form-item label="业务标识">
        <a-select v-model:value="businessKey" @change="updateElementBusinessKey">
          <a-select-option v-for="i in fieldList" :key="i.id" :value="i.id">{{ i.label }}</a-select-option>
          <a-select-option value="">无</a-select-option>
        </a-select>
      </a-form-item>
    </a-form>

    <!--字段列表-->
    <div class="element-property list-property">
      <a-divider> <gold-outlined /> 表单字段 </a-divider>
      <a-table :data-source="fieldList" size="small" :scroll="{ y: 240, x: 240 }" bordered>
        <a-table-column title="序号" align="center" width="50px">
          <template #customRender="{ index }">
            {{ index + 1 }}
          </template>
        </a-table-column>
        <a-table-column title="字段名称" data-index="label" width="80px" />
        <a-table-column title="字段类型">
          <template #customRender="{ record }">
            {{ fieldType[record.type] || record.type }}
          </template>
        </a-table-column>
        <a-table-column title="默认值" data-index="defaultValue" width="80px" />
        <a-table-column title="操作" width="90px">
          <template #customRender="{ record, index }">
            <a-space>
              <a @click="openFieldForm(record, index)">编辑</a>
              <a-divider type="vertical" />
              <a class="text-red" @click="removeField(record, index)">移除</a>
            </a-space>
          </template>
        </a-table-column>
      </a-table>
    </div>

    <div class="element-drawer__button">
      <a-button size="small" type="primary" @click="openFieldForm(null, -1)">
        <template #icon><plus-outlined /></template>
        添加字段
      </a-button>
    </div>

    <!--字段配置侧边栏-->
    <a-drawer v-model:open="fieldModelVisible" title="字段配置" :width="width" :destroy-on-close="true">
      <a-form :model="formFieldForm" :label-col="{ span: 6 }" :wrapper-col="{ span: 18 }" size="small">
        <a-form-item label="字段ID">
          <a-input v-model:value="formFieldForm.id" allow-clear />
        </a-form-item>
        <a-form-item label="类型">
          <a-select v-model:value="formFieldForm.typeType" placeholder="请选择字段类型" allow-clear @change="changeFieldTypeType">
            <a-select-option v-for="(value, key) in fieldType" :key="key" :value="key">
              {{ value }}
            </a-select-option>
          </a-select>
        </a-form-item>
        <a-form-item v-if="formFieldForm.typeType === 'custom'" label="类型名称">
          <a-input v-model:value="formFieldForm.type" allow-clear />
        </a-form-item>
        <a-form-item label="名称">
          <a-input v-model:value="formFieldForm.label" allow-clear />
        </a-form-item>
        <a-form-item v-if="formFieldForm.typeType === 'date'" label="时间格式">
          <a-input v-model:value="formFieldForm.datePattern" allow-clear />
        </a-form-item>
        <a-form-item label="默认值">
          <a-input v-model:value="formFieldForm.defaultValue" allow-clear />
        </a-form-item>
      </a-form>

      <!-- 枚举值设置 -->
      <template v-if="formFieldForm.type === 'enum'">
        <a-divider />
        <div class="list-header">
          <span><menu-outlined /> 枚举值列表：</span>
          <a-button size="small" type="primary" @click="openFieldOptionForm(null, -1, 'enum')"> 添加枚举值 </a-button>
        </div>
        <a-table :data-source="fieldEnumList" size="small" :scroll="{ y: 240 }" bordered>
          <a-table-column title="序号" align="center" width="50px">
            <template #customRender="{ index }">
              {{ index + 1 }}
            </template>
          </a-table-column>
          <a-table-column title="枚举值编号" data-index="id" :ellipsis="true" />
          <a-table-column title="枚举值名称" data-index="name" :ellipsis="true" />
          <a-table-column title="操作" width="90px">
            <template #customRender="{ record, index }">
              <a-space>
                <a @click="openFieldOptionForm(record, index, 'enum')">编辑</a>
                <a-divider type="vertical" />
                <a class="text-red" @click="removeFieldOptionItem(record, index, 'enum')">移除</a>
              </a-space>
            </template>
          </a-table-column>
        </a-table>
      </template>

      <!-- 校验规则 -->
      <a-divider />
      <div class="list-header">
        <span><menu-outlined /> 约束条件列表：</span>
        <a-button size="small" type="primary" @click="openFieldOptionForm(null, -1, 'constraint')"> 添加约束 </a-button>
      </div>
      <a-table :data-source="fieldConstraintsList" size="small" :scroll="{ y: 240 }" bordered>
        <a-table-column title="序号" align="center" width="50px">
          <template #customRender="{ index }">
            {{ index + 1 }}
          </template>
        </a-table-column>
        <a-table-column title="约束名称" data-index="name" :ellipsis="true" />
        <a-table-column title="约束配置" data-index="config" :ellipsis="true" />
        <a-table-column title="操作" width="90px">
          <template #customRender="{ record, index }">
            <a-space>
              <a @click="openFieldOptionForm(record, index, 'constraint')">编辑</a>
              <a-divider type="vertical" />
              <a class="text-red" @click="removeFieldOptionItem(record, index, 'constraint')">移除</a>
            </a-space>
          </template>
        </a-table-column>
      </a-table>

      <!-- 表单属性 -->
      <a-divider />
      <div class="list-header">
        <span><menu-outlined /> 字段属性列表：</span>
        <a-button size="small" type="primary" @click="openFieldOptionForm(null, -1, 'property')"> 添加属性 </a-button>
      </div>
      <a-table :data-source="fieldPropertiesList" size="small" :scroll="{ y: 240 }" bordered>
        <a-table-column title="序号" align="center" width="50px">
          <template #customRender="{ index }">
            {{ index + 1 }}
          </template>
        </a-table-column>
        <a-table-column title="属性编号" data-index="id" :ellipsis="true" />
        <a-table-column title="属性值" data-index="value" :ellipsis="true" />
        <a-table-column title="操作" width="90px">
          <template #customRender="{ record, index }">
            <a-space>
              <a @click="openFieldOptionForm(record, index, 'property')">编辑</a>
              <a-divider type="vertical" />
              <a class="text-red" @click="removeFieldOptionItem(record, index, 'property')">移除</a>
            </a-space>
          </template>
        </a-table-column>
      </a-table>

      <!-- 底部按钮 -->
      <template #footer>
        <a-space>
          <a-button size="small" @click="fieldModelVisible = false">取 消</a-button>
          <a-button size="small" type="primary" @click="saveField">保 存</a-button>
        </a-space>
      </template>
    </a-drawer>

    <a-modal v-model:open="fieldOptionModelVisible" :title="optionModelTitle" width="600px" :destroy-on-close="true" @ok="saveFieldOption">
      <a-form :model="fieldOptionForm" :label-col="{ span: 6 }" :wrapper-col="{ span: 18 }" size="small">
        <a-form-item v-if="fieldOptionType !== 'constraint'" key="option-id" label="编号/ID">
          <a-input v-model:value="fieldOptionForm.id" allow-clear />
        </a-form-item>
        <a-form-item v-if="fieldOptionType !== 'property'" key="option-name" label="名称">
          <a-input v-model:value="fieldOptionForm.name" allow-clear />
        </a-form-item>
        <a-form-item v-if="fieldOptionType === 'constraint'" key="option-config" label="配置">
          <a-input v-model:value="fieldOptionForm.config" allow-clear />
        </a-form-item>
        <a-form-item v-if="fieldOptionType === 'property'" key="option-value" label="值">
          <a-input v-model:value="fieldOptionForm.value" allow-clear />
        </a-form-item>
      </a-form>
    </a-modal>
  </div>
</template>

<script>
  import { PlusOutlined, MenuOutlined, GoldOutlined } from '@ant-design/icons-vue';

  export default {
    name: 'ElementForm',
    components: {
      PlusOutlined,
      MenuOutlined,
      GoldOutlined,
    },
    props: {
      id: String,
      type: String,
    },
    inject: {
      prefix: 'prefix',
      width: 'width',
    },
    data() {
      return {
        formKey: '',
        businessKey: '',
        optionModelTitle: '',
        fieldList: [],
        formFieldForm: {},
        fieldType: {
          long: '长整型',
          string: '字符串',
          boolean: '布尔类',
          date: '日期类',
          enum: '枚举类',
          custom: '自定义类型',
        },
        formFieldIndex: -1,
        formFieldOptionIndex: -1,
        fieldModelVisible: false,
        fieldOptionModelVisible: false,
        fieldOptionForm: {},
        fieldOptionType: '',
        fieldEnumList: [],
        fieldConstraintsList: [],
        fieldPropertiesList: [],
      };
    },
    watch: {
      id: {
        immediate: true,
        handler(val) {
          val && val.length && this.$nextTick(() => this.resetFormList());
        },
      },
    },
    methods: {
      resetFormList() {
        this.bpmnELement = window.bpmnInstances.bpmnElement;
        this.formKey = this.bpmnELement.businessObject.formKey;
        // 获取元素扩展属性 或者 创建扩展属性
        this.elExtensionElements =
          this.bpmnELement.businessObject.get('extensionElements') || window.bpmnInstances.moddle.create('bpmn:ExtensionElements', { values: [] });
        // 获取元素表单配置 或者 创建新的表单配置
        try {
          this.formData =
            this.elExtensionElements.values.filter((ex) => ex.$type === `${this.prefix}:FormData`)[0] ||
            window.bpmnInstances.moddle.create(`${this.prefix}:FormData`, { fields: [] });
        } catch (error) {
          this.formData = {};
          console.log(error);
        }

        // 业务标识 businessKey， 绑定在 formData 中
        this.businessKey = this.formData.businessKey;

        // 保留剩余扩展元素，便于后面更新该元素对应属性
        this.otherExtensions = this.elExtensionElements.values.filter((ex) => ex.$type !== `${this.prefix}:FormData`);

        // 复制原始值，填充表格
        this.fieldList = JSON.parse(JSON.stringify(this.formData.fields || []));

        // 更新元素扩展属性，避免后续报错
        this.updateElementExtensions();
      },
      updateElementFormKey() {
        window.bpmnInstances.modeling.updateProperties(this.bpmnELement, { formKey: this.formKey });
      },
      updateElementBusinessKey() {
        window.bpmnInstances.modeling.updateModdleProperties(this.bpmnELement, this.formData, { businessKey: this.businessKey });
      },
      // 根据类型调整字段type
      changeFieldTypeType(type) {
        this.formFieldForm['type'] = type === 'custom' ? '' : type;
      },

      // 打开字段详情侧边栏
      openFieldForm(field, index) {
        this.formFieldIndex = index;
        if (index !== -1) {
          const FieldObject = this.formData.fields[index];
          this.formFieldForm = JSON.parse(JSON.stringify(field));
          // 设置自定义类型
          this.formFieldForm['typeType'] = !this.fieldType[field.type] ? 'custom' : field.type;
          // 初始化枚举值列表
          field.type === 'enum' && (this.fieldEnumList = JSON.parse(JSON.stringify(FieldObject?.values || [])));
          // 初始化约束条件列表
          this.fieldConstraintsList = JSON.parse(JSON.stringify(FieldObject?.validation?.constraints || []));
          // 初始化自定义属性列表
          this.fieldPropertiesList = JSON.parse(JSON.stringify(FieldObject?.properties?.values || []));
        } else {
          this.formFieldForm = {};
          // 初始化枚举值列表
          this.fieldEnumList = [];
          // 初始化约束条件列表
          this.fieldConstraintsList = [];
          // 初始化自定义属性列表
          this.fieldPropertiesList = [];
        }
        this.fieldModelVisible = true;
      },
      // 打开字段 某个 配置项 弹窗
      openFieldOptionForm(option, index, type) {
        this.fieldOptionModelVisible = true;
        this.fieldOptionType = type;
        this.formFieldOptionIndex = index;
        if (type === 'property') {
          this.fieldOptionForm = option ? JSON.parse(JSON.stringify(option)) : {};
          return (this.optionModelTitle = '属性配置');
        }
        if (type === 'enum') {
          this.fieldOptionForm = option ? JSON.parse(JSON.stringify(option)) : {};
          return (this.optionModelTitle = '枚举值配置');
        }
        this.fieldOptionForm = option ? JSON.parse(JSON.stringify(option)) : {};
        return (this.optionModelTitle = '约束条件配置');
      },

      // 保存字段 某个 配置项
      saveFieldOption() {
        if (this.formFieldOptionIndex === -1) {
          if (this.fieldOptionType === 'property') {
            this.fieldPropertiesList.push(this.fieldOptionForm);
          }
          if (this.fieldOptionType === 'constraint') {
            this.fieldConstraintsList.push(this.fieldOptionForm);
          }
          if (this.fieldOptionType === 'enum') {
            this.fieldEnumList.push(this.fieldOptionForm);
          }
        } else {
          this.fieldOptionType === 'property' && this.fieldPropertiesList.splice(this.formFieldOptionIndex, 1, this.fieldOptionForm);
          this.fieldOptionType === 'constraint' && this.fieldConstraintsList.splice(this.formFieldOptionIndex, 1, this.fieldOptionForm);
          this.fieldOptionType === 'enum' && this.fieldEnumList.splice(this.formFieldOptionIndex, 1, this.fieldOptionForm);
        }
        this.fieldOptionModelVisible = false;
        this.fieldOptionForm = {};
      },
      // 保存字段配置
      saveField() {
        const { id, type, label, defaultValue, datePattern } = this.formFieldForm;
        const Field = window.bpmnInstances.moddle.create(`${this.prefix}:FormField`, { id, type, label });
        defaultValue && (Field.defaultValue = defaultValue);
        datePattern && (Field.datePattern = datePattern);
        // 构建属性
        if (this.fieldPropertiesList && this.fieldPropertiesList.length) {
          const fieldPropertyList = this.fieldPropertiesList.map((fp) => {
            return window.bpmnInstances.moddle.create(`${this.prefix}:Property`, { id: fp.id, value: fp.value });
          });
          Field.properties = window.bpmnInstances.moddle.create(`${this.prefix}:Properties`, { values: fieldPropertyList });
        }
        // 构建校验规则
        if (this.fieldConstraintsList && this.fieldConstraintsList.length) {
          const fieldConstraintList = this.fieldConstraintsList.map((fc) => {
            return window.bpmnInstances.moddle.create(`${this.prefix}:Constraint`, { name: fc.name, config: fc.config });
          });
          Field.validation = window.bpmnInstances.moddle.create(`${this.prefix}:Validation`, { constraints: fieldConstraintList });
        }
        // 构建枚举值
        if (this.fieldEnumList && this.fieldEnumList.length) {
          Field.values = this.fieldEnumList.map((fe) => {
            return window.bpmnInstances.moddle.create(`${this.prefix}:Value`, { name: fe.name, id: fe.id });
          });
        }
        // 更新数组 与 表单配置实例
        if (this.formFieldIndex === -1) {
          this.fieldList.push(this.formFieldForm);
          this.formData.fields && this.formData.fields.push(Field);
        } else {
          this.fieldList.splice(this.formFieldIndex, 1, this.formFieldForm);
          this.formData.fields.splice(this.formFieldIndex, 1, Field);
        }
        this.updateElementExtensions();
        this.fieldModelVisible = false;
      },

      // 移除某个 字段的 配置项
      removeFieldOptionItem(option, index, type) {
        if (type === 'property') {
          this.fieldPropertiesList.splice(index, 1);
          return;
        }
        if (type === 'enum') {
          this.fieldEnumList.splice(index, 1);
          return;
        }
        this.fieldConstraintsList.splice(index, 1);
      },
      // 移除 字段
      removeField(field, index) {
        this.fieldList.splice(index, 1);
        this.formData.fields.splice(index, 1);
        this.updateElementExtensions();
      },

      updateElementExtensions() {
        // 更新回扩展元素
        const newElExtensionElements = window.bpmnInstances.moddle.create(`bpmn:ExtensionElements`, {
          values: this.otherExtensions.concat(this.formData),
        });
        // 更新到元素上
        window.bpmnInstances.modeling.updateProperties(this.bpmnELement, {
          extensionElements: newElExtensionElements,
        });
      },
    },
  };
</script>

<style>
  .panel-tab__content {
    padding: 8px;
  }

  .list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
  }

  .list-header span {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .text-red {
    color: #ff4d4f;
  }

  .element-drawer__button {
    margin-top: 8px;
    text-align: right;
  }
</style>
